Can you tell me an easy way (or some easy ways) to solve the following integral? $\displaystyle \int\frac{dx}{sin^2(x)}$
Thanks.
I don't remember... I guess there is a $\displaystyle ln$ of something.
So let's solve the simpler integral$\displaystyle \int \frac{1}{sin(x)} dx$. To get the one I need, I think a simple substitution will do the job.
I thought of integration by part, but it get more complicated than $\displaystyle \int \frac{1}{sin(x)} dx$. Can you help me a little more?